公开(公告)号：EP1017244B1

公开(公告)日：2009-02-11

申请号：EP98830788.0

申请日：1998-12-28

申请人： Italtel S.p.a. ,  Siemens S.p.A.

发明人： Profumo, Alberto ,  Santacesaria Claudio ,  Baldo Paolo ,  Lovino Luigi

IPC分类号： H04Q11/04

CPC分类号： H04Q11/0478 ,  H04L2012/5605 ,  H04L2012/5607 ,  H04L2012/561 ,  H04L2012/5632

公开(公告)号：EP1017244A1

公开(公告)日：2000-07-05

申请号：EP98830788.0

申请日：1998-12-28

申请人： Italtel s.p.a.

发明人： Profumo, Alberto ,  Santacesaria Claudio ,  Baldo Paolo ,  Lovino Luigi

IPC分类号： H04Q11/04

CPC分类号： H04Q11/0478 ,  H04L2012/5605 ,  H04L2012/5607 ,  H04L2012/561 ,  H04L2012/5632

摘要： A method and a system are described to assign bandwidth in a point-to-multipoint ATM transmission system, comprising a centralised unit or Master Station (MS) and a plurality of peripheral units (PSs), in particular to assign transmission bandwidth on the channel from PSs to MS, by assigning transmission abilitations in defined time slots sending messages called Grants on the channel from MS to PSs.
The system comprises means adapted to preallocate a certain portion of the total bandwidth in static way to various PSs on the basis of the information about active connections without considering queue status of the PSs.
According to the invention MS comprises additional means able to elaborate instantaneous bandwidth requirement information ("Requests") sent by PSs and able to allow distribution of bandwidth not assigned with previous static technique according to two additional modalities together defined dynamic bandwidth allocation mode and explicitly described in the following:

first additional modality is defined guaranteed dynamical bandwidth and means are structured in a way to generate a rate of assignment of transmission abilitations (Grants) that is prefixed but is real time modifiable according to instantaneous bandwidth requirements notified by each PS, so that a minimum guaranteed bandwidth defined during connection setup phase is always assigned when requested with precise notification.
second additional modality is called available dynamic bandwidth and means are structured in a way that allow assignment of bandwidth which is not assigned by the previous techniques by sharing it in equal parts among all the PSs that signal to the MS the need to use the channel from PSs to MS to send traffic.

摘要翻译： 描述了一种方法和系统，用于在包括集中式单元或主站（MS）和多个外围单元（PS））的点对多点ATM传输系统中分配带宽，特别是在信道上分配传输带宽 从PS到MS，通过在定义的时隙中分配传输延迟，从MS到PS在信道上发送称为Grants的消息。 该系统包括适于根据关于主动连接的信息而以静态方式将某些部分总带宽预先分配给各种PS的装置，而不考虑PS的队列状态。 根据本发明，MS包括能够精简由PS发送的瞬时带宽需求信息（“请求”）并且能够根据两个附加模态将未分配的先前静态技术的带宽分配在一起定义的动态带宽分配模式并且被明确描述的附加装置 在以下内容中：第一附加模式被定义为保证的动态带宽，并且手段以生成传输衰减（Grants）的分配速率的方式被构造，其具有前缀，但是可以根据每个PS通知的瞬时带宽需求进行实时修改，因此 在连接建立阶段定义的最小保证带宽始终在精确通知请求时分配。 第二附加模态称为可用动态带宽，并且装置以允许通过在向MS发信号的所有PS之间的相等部分中共享它来分配未被先前技术分配的带宽的方式构成，需要使用来自 PS到MS发送流量。